win32: improve the performance of win32.unlink() over CIFS
Emulating POSIX unlink() behavior with os.rename() and os.unlink() is often slow
especially over CIFS from Windows clients due to its protocol overhead. This
patch changes win32.unlink() to try first an exclusive open with the Win32
delete-on-close flag, and if a sharing violation is detected, to fall back to
the original emulation.
This patch also removes a test with os.path.isdir() since we expect opening a
directory shall fail as os.unlink() would.
Example measurements (repeated 3-times after 1-time calibration):
(Without this patch: hg update from null to default)
127 files updated, 0 files merged, 0 files removed, 0 files unresolved
time: real 19.871 secs (user 0.328+0.000 sys 1.794+0.000)
time: real 19.622 secs (user 0.312+0.000 sys 2.044+0.000)
time: real 19.138 secs (user 0.250+0.000 sys 1.872+0.000)
(Without this patch: hg update from default to null)
0 files updated, 0 files merged, 127 files removed, 0 files unresolved
time: real 35.158 secs (user 0.156+0.000 sys 2.512+0.000)
time: real 35.272 secs (user 0.250+0.000 sys 2.512+0.000)
time: real 36.569 secs (user 0.203+0.000 sys 2.387+0.000)
(With this patch: hg update from null to default)
127 files updated, 0 files merged, 0 files removed, 0 files unresolved
time: real 17.893 secs (user 0.328+0.000 sys 1.700+0.000)
time: real 18.512 secs (user 0.265+0.000 sys 1.529+0.000)
time: real 20.238 secs (user 0.312+0.000 sys 1.685+0.000)
(With this patch: hg update from default to null)
0 files updated, 0 files merged, 127 files removed, 0 files unresolved
time: real 12.312 secs (user 0.250+0.000 sys 0.811+0.000)
time: real 12.471 secs (user 0.156+0.000 sys 0.889+0.000)
time: real 9.727 secs (user 0.125+0.000 sys 0.858+0.000)
#!/usr/bin/env python
#
# checkseclevel - checking section title levels in each online help documents
import sys, os
import optparse
# import from the live mercurial repo
sys.path.insert(0, "..")
# fall back to pure modules if required C extensions are not available
sys.path.append(os.path.join('..', 'mercurial', 'pure'))
from mercurial import demandimport; demandimport.enable()
from mercurial.commands import table
from mercurial.help import helptable
from mercurial import extensions
from mercurial import minirst
from mercurial import util
_verbose = False
def verbose(msg):
if _verbose:
print msg
def error(msg):
sys.stderr.write('%s\n' % msg)
level2mark = ['"', '=', '-', '.', '#']
reservedmarks = ['"']
mark2level = {}
for m, l in zip(level2mark, xrange(len(level2mark))):
if m not in reservedmarks:
mark2level[m] = l
initlevel_topic = 0
initlevel_cmd = 1
initlevel_ext = 1
initlevel_ext_cmd = 3
def showavailables(initlevel):
error(' available marks and order of them in this help: %s' %
(', '.join(['%r' % (m * 4) for m in level2mark[initlevel + 1:]])))
def checkseclevel(doc, name, initlevel):
verbose('checking "%s"' % name)
blocks, pruned = minirst.parse(doc, 0, ['verbose'])
errorcnt = 0
curlevel = initlevel
for block in blocks:
if block['type'] != 'section':
continue
mark = block['underline']
title = block['lines'][0]
if (mark not in mark2level) or (mark2level[mark] <= initlevel):
error('invalid section mark %r for "%s" of %s' %
(mark * 4, title, name))
showavailables(initlevel)
errorcnt += 1
continue
nextlevel = mark2level[mark]
if curlevel < nextlevel and curlevel + 1 != nextlevel:
error('gap of section level at "%s" of %s' %
(title, name))
showavailables(initlevel)
errorcnt += 1
continue
verbose('appropriate section level for "%s %s"' %
(mark * (nextlevel * 2), title))
curlevel = nextlevel
return errorcnt
def checkcmdtable(cmdtable, namefmt, initlevel):
errorcnt = 0
for k, entry in cmdtable.items():
name = k.split("|")[0].lstrip("^")
if not entry[0].__doc__:
verbose('skip checking %s: no help document' %
(namefmt % name))
continue
errorcnt += checkseclevel(entry[0].__doc__,
namefmt % name,
initlevel)
return errorcnt
def checkhghelps():
errorcnt = 0
for names, sec, doc in helptable:
if util.safehasattr(doc, '__call__'):
doc = doc()
errorcnt += checkseclevel(doc,
'%s help topic' % names[0],
initlevel_topic)
errorcnt += checkcmdtable(table, '%s command', initlevel_cmd)
for name in sorted(extensions.enabled().keys() +
extensions.disabled().keys()):
mod = extensions.load(None, name, None)
if not mod.__doc__:
verbose('skip checking %s extension: no help document' % name)
continue
errorcnt += checkseclevel(mod.__doc__,
'%s extension' % name,
initlevel_ext)
cmdtable = getattr(mod, 'cmdtable', None)
if cmdtable:
errorcnt += checkcmdtable(cmdtable,
'%s command of ' + name + ' extension',
initlevel_ext_cmd)
return errorcnt
def checkfile(filename, initlevel):
if filename == '-':
filename = 'stdin'
doc = sys.stdin.read()
else:
fp = open(filename)
try:
doc = fp.read()
finally:
fp.close()
verbose('checking input from %s with initlevel %d' %
(filename, initlevel))
return checkseclevel(doc, 'input from %s' % filename, initlevel)
if __name__ == "__main__":
optparser = optparse.OptionParser("""%prog [options]
This checks all help documents of Mercurial (topics, commands,
extensions and commands of them), if no file is specified by --file
option.
""")
optparser.add_option("-v", "--verbose",
help="enable additional output",
action="store_true")
optparser.add_option("-f", "--file",
help="filename to read in (or '-' for stdin)",
action="store", default="")
optparser.add_option("-t", "--topic",
help="parse file as help topic",
action="store_const", dest="initlevel", const=0)
optparser.add_option("-c", "--command",
help="parse file as help of core command",
action="store_const", dest="initlevel", const=1)
optparser.add_option("-e", "--extension",
help="parse file as help of extension",
action="store_const", dest="initlevel", const=1)
optparser.add_option("-C", "--extension-command",
help="parse file as help of extension command",
action="store_const", dest="initlevel", const=3)
optparser.add_option("-l", "--initlevel",
help="set initial section level manually",
action="store", type="int", default=0)
(options, args) = optparser.parse_args()
_verbose = options.verbose
if options.file:
if checkfile(options.file, options.initlevel):
sys.exit(1)
else:
if checkhghelps():
sys.exit(1)